APA (7 वां संस्करण) प्रशस्ति पत्र

Graff, W. L. (1964). Language and languages: An introduction to linguistics. Russell and Russell.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Graff, Willem Laurens. Language and Languages: An Introduction to Linguistics. New York: Russell and Russell, 1964.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Graff, Willem Laurens. Language and Languages: An Introduction to Linguistics. Russell and Russell, 1964.